Jordan Thurston Posted August 3, 2015 Report Share Posted August 3, 2015 I'm looking to build a 4th order for my 2 soundqubed hds312s box is going in the trunk of a 2012 impala looking to have the port firing through the smaller part of my seat that folds down. How much space would I need and what ratio and tuning should I use ? Any help would be appreciated Link to comment Share on other sites More sharing options...
Jordan Thurston Posted August 7, 2015 Author Report Share Posted August 7, 2015 I'm gunna go with a 2:1 ratio and 47 hz tuning and see how it sounds I guess 5 cubes ported and 2.5 sealed or maybe go with 3 sealed instead trying to be able to play like 25 hz to 60hz Link to comment Share on other sites More sharing options...
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